Worksheetspractice keystone species
Total questions: 55
Worksheet time: 2hrs 42mins
A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.
keystone
invasive
engineer
predator
Two or more species that engage in mutually beneficial interactions.
mutualists
engineers
invasives
predators
A species that does not belong in a balanced ecosystem, comes in, and changes it (usually for the worse).
flagnship
umbrella
invasive
predator
A species that helps to manage prey populations, which in turn controls the ecosystem's producers (vegetation).
predator
keystone
engineer
mutualist
A species whose behavior contributes to the physical geography of their habitat, making or modifying habitat.
engineer
predator
keystone
umbrella
What is species diversity?
the different animals in an area
the different habitats in an area
the different plants in an area
the different living things (plants and animals) in an area
What is an invasive species?
an organism that IS native to an area and causes harm to the environment/humans
an organism that is NOT native to an area and causes harm to the environment/humans
an organism that is NOT native to an area and helps the environment/humans
an organism that IS native to an area and helps the environment/humans
Why do the populations of invasive species grow so quickly?
Invasive Species are native to an area.
Invasive species are prey to many animals.
Invasive species have no natural predators.
Invasive species keep the ecosystems in equilibrium.
Which of these words does NOT describe an invasive species?
alien
intruder
non-native
natural
What is a keystone species?
A species that helps to hold an ecosystem together
A species that lives in or around rocks
Keys and stones have nothing to do with ecology
A keystone isn't a living thing, it's just a stone
What do the arrows represent in a food chain?
Separation of trophic levels
Flow of energy
Transfer of matter
Feeding niches
A _____________makes it's own energy and starts a food chain.
sun
producer
primary consumer
decomposer
The 10% rule states that only 10% of the available energy makes it from one trophic level to the next. If the producers have 100,000 kcals available how many kcals would be available to the primary consumers?
10
100
1,000
10,000
TRUE or FALSE? Invasive species grow quickly due to the lack of predators. This leads to a decline or extinction of the native population.
True
False
A species that is not native to an area and cause harm (damage) to the ecosystem
Native Species.
Natural Species.
Invasive Species.
Symbiotic Species.
A species indigenous to a certain region or ecosystem naturally is a ---
Native Species.
Accidental Species.
Introduced Species.
Invasive Species.
A species form that supports the balance in the entire ecosystem.
Keystone Species
Herbivores
Umbrella Species
Predators
An animal that naturally preys on others.
Keystone Species
Predators
Umbrella Species
Herbivores
Biodiversity, refers to
the same species in a general location
the number of different species in a given area
the number of animal species in a given area
the number of plant species in a given area
Which of these words does NOT describe an invasive species?
Alien
Intruder
Non-native
Natural
Invasive plants compete with native plants for --- [choose 3]
sunlight
water
oxygen
space
The primary cause of the introduction of invasive species is ---
too much food
humans bringing them over
weather events
asteroids
What happens to an ecosystem when a native species disappears?
Biodiversity increases
Invasive species leave
The food web becomes more stable
Opportunities open up for invasive species
A conservation scientist’s work may include protecting:
Predators from prey
Native species from extinction
Invasive species from humans
Pets from predators
A species indigenous to a certain region or ecosystem naturally is a ---
Native Species.
Accidental Species.
Introduced Species.
Invasive Species.
A species form that supports the balance in the entire ecosystem.
Keystone Species
Herbivores
Umbrella Species
Predators
Plant Eaters
Herbivores
Carnivores
Omnivores
Which of these words does NOT describe an invasive species?
Alien
Intruder
Non-native
Natural
TRUE or FALSE? Invasive species can be introduced to an ecosystem accidentally/
True
False
TRUE or FALSE? Invasive species can be introduced to an ecosystem intentionally (on purpose).
True
False
Invasive plants compete with native plants for --- [choose 3]
sunlight
water
oxygen
space
The primary cause of the introduction of invasive species is ---
too much food
humans bringing them over
weather events
asteroids
When removed from its natural habitat, an invasive species:
Struggles to find food
Cannot adapt to the climate
Thrives and causes harm
Enhances its new environment
What happens to an ecosystem when a native species disappears?
Biodiversity increases
Invasive species leave
The food web becomes more stable
Opportunities open up for invasive species
A conservation scientist’s work may include protecting:
Predators from prey
Native species from extinction
Invasive species from humans
Pets from predators
How can you support conservation efforts?
Collect environmental data
Plant native species in gardens
Join a group that removes invasive plants
All of the above
What is a Keysone species?
A species that helps with keeping an ecosystem together
A species that is about to die off
A species that is not needed in an environment
Can a Grizzly Bear be considered a keystone species?
Yes
No
A keystone species has
big impact on ecosystem, big population
small impact on ecosystem, small population
big impact on ecosystem, small population
A species that maintain biodiversity by keeping prey populations controlled are called
Introduced Species
Keystone Species
Invasive Species
What type of animal is a keystone species, often?
A pray
A predator
Which is not an example of a keystone species
Sharks
Grizzly Bears
Sea Otters
Lizards
